SIFFO Co-Extruded HDPE pipes are manufactured with a highly reflective white outer layer. The coating is extruded (Co-Extruded) at the same time as the main pipe, forming an integral part of the pipe. This means that more than 95% of the pipes are made from standard black PE material with a thin white coating on the outside to reflect sunlight and reduce heat gain.
SIFFO has invested in new state-of-the-art extrusion machinery that can produce Co-Extruded PE pipes very efficiently. This means that Co-Extruded HDPE pipe does not cost much more than standard black HDPE pipe. SIFFO's new machine can also manufacture white Co-Extruded pipes with stripes of any color to help identify the pipe's contents.
Product Name | SIFFO Co-Extruded HDPE Pipe |
Specification | DN20 - DN1600mm |
Pressure | SDR7.4-PN25, SDR9-PN20, SDR11-PN16, SDR13.6-PN12.5, SDR17-PN10, SDR21-PN8, SDR26-PN6, SDR33-PN5 |
Raw Material | PE80, PE100, PE100-RC, PE4710 |
Standards | ISO 4427, AS/NZS 4130, BS EN 12201,DIN 8074 |
Application | Urban drink water supply Oil and gas transportation. |
Connection | Butt fusion Welding, Electrofusion Welding |
Color | Black,White or Customized |
▎Co-Extruded HDPE Pipe Characteristics
SIFFO Co-Extruded HDPE pipes are the ultimate solution for above-ground applications including temporary water supply, offering the following advantages over black polyethylene pipes:
1. All-white coating minimizes solar heating of pipes and contents; tests show a reduction of over 50%.
2.Ultraviolet (UV) resistant.
3. Lower pressure ratings can be used because the lower operating temperature reduces the need to allow for pressure derating, allowing thinner wall tubing to be used. This provides cost savings in materials and by increasing the flow rate.
4. Reduced thermal expansion/contraction means less need for "serpentine" piping.
5.Flexibility allows the pipeline to adapt to terrain features.
6. Excellent solution for above ground applications including temporary water supply.
7. Double-walled, Co-Extruded, or Co-Extruded or "double-skinned" tubing means that white material is extruded at the same time as black material, bonding the two together.
8. Manufactured to ISO 4427 Standard "Polyethylene - PE - Pipes for pressure applications".
9. SIFFO HDPE Co-Extruded pipes can be joined with electrofusion fittings, butt welding equipment or compression fittings.
▎SIFFO Co-Extruded HDPE pipe Application
Pipe systems exposed to the ground
Mining industry: used for conveying slurry, drainage or water sources in open-pit mining, the white coating can reduce the surface temperature of the pipe and reduce thermal expansion and contraction.
Agricultural irrigation: used for ground sprinkler systems, the white outer layer can reflect sunlight, reduce the aging of the pipe due to high temperature, and extend the service life.
Temporary water source delivery: when moving water sources on site, the white coating can protect the pipe from ultraviolet radiation to ensure water quality safety.
Urban infrastructure
Above-ground drainage pipes: in hot climates, the white coating can reduce the heat absorption of the pipe and avoid deformation or rupture of the pipe due to high temperature.
Communication cable protective sleeves: the white outer layer can reduce the temperature of the cable pipe and reduce the aging or failure of the cable due to high temperature.
Industrial applications
Chemical and petroleum industries: used for conveying liquid or gaseous media, the white coating can reduce the thermal stress of the pipe in high temperature environments and improve safety.
Open-air wastewater treatment systems: the white outer layer can prevent the pipe from degradation due to ultraviolet radiation and extend the service life.
▎Why Choose SIFFO Co-Extruded HDPE Pipe
Large-Scale Manufacturing Strength & Industrial Capacity
1. High-Capacity Production Lines
SIFFO operates multiple advanced HDPE co-extrusion production lines, designed for continuous, high-volume manufacturing:
Fully automatic extrusion production line
Multi-layer co-extrusion capability (2-layer / 3-layer)
Stable output for large-diameter pipes
Continuous 24/7 production operation
Ensures fast delivery for large infrastructure projects.
2. Wide Diameter & Output Capability
SIFFO’s manufacturing supports:
Diameter range: DN20 – DN1600
Pressure rating: PN6 – PN25
Material: PE100 / PE4710
Capable of producing large-diameter municipal pipelines
Suitable for national-level water supply and industrial projects
3. Mass Production & Inventory Capacity
Large-scale finished pipe stockyards
Batch production of uniform, high-quality pipes
Strong warehousing and logistics capability
Advantages:
Short lead time
Bulk order fulfillment
Stable supply chain for EPC contractors
4. Advanced Quality Control
SIFFO integrates real-time online inspection capabilities:
Laser diameter & wall thickness monitoring
Automated marking and traceability management
Strict compliance with ISO / EN standards
Guarantees consistency across high-volume production.
5. Industrial Manufacturing Infrastructure
The factory setup includes:
Large-scale extrusion workshops
Heavy-duty cooling and calibration systems
Dedicated co-extrusion units
Professional technical teams
Supports simultaneous multi-order production
Maintains high efficiency + consistent quality
6. Engineering-Level Supply Capability
SIFFO is not just a pipe supplier — but a project-scale manufacturing partner:
Supports long-distance pipeline projects
Handles government and infrastructure tenders
Provides stable supply for international markets
▎FAQ
1. What is a co-extruded HDPE pipe?
A co-extruded HDPE pipe is a multi-layer pipe manufactured in a single extrusion process, where different materials or formulations are combined into one structure.
Typically includes:
Inner layer: structural strength (PE100 / PE4710)
Outer layer: UV protection / color / environmental resistance
✔ No delamination
✔ Fully fused structure
2. What are the advantages over single-layer HDPE pipes?
Co-extruded HDPE pipes offer:
Better UV resistance (ideal for outdoor use)
Enhanced durability and impact resistance
Optimized cost (material distribution)
Improved thermal performance
Higher performance with better cost efficiency
3. What standards do SIFFO HDPE pipes comply with?
Our pipes are manufactured according to:
ISO 4427
EN 12201
ASTM standards (on request)
Suitable for potable water, drainage, and industrial applications
4. What is your production capacity?
SIFFO operates large-scale industrial production lines:
Multiple extrusion lines running 24/7
Diameter range: DN20 – DN1600
High daily output for bulk orders
Capable of supporting large infrastructure projects
5. What is the lead time for bulk orders?
Typical lead time:
Standard orders: 7–15 days
Large project orders: 15–30 days
Depends on diameter, quantity, and customization
Fast delivery supported by large inventory
6. Can you supply large-diameter pipes?
Yes. Up to DN1600. Suitable for municipal water, drainage, and industrial pipelines
Proven in large-scale projects
7. What connection methods are available?
SIFFO HDPE pipes support:
Butt fusion
Electrofusion
Leak-free system
Joint strength ≥ pipe strength
8. Are your pipes suitable for harsh environments?
Yes, especially co-extruded pipes:
UV-resistant outer layer
Corrosion-resistant material
Chemical resistance
Ideal for:
Africa
Middle East
Mining environments
9. What is the service life of your HDPE pipes?
✔ Design life: 50+ years
✔ Resistant to corrosion, scaling, and chemical attack
Lower maintenance and lifecycle cost
10. Do you provide technical support?
Yes, we provide:
Installation guidance
Welding support
Project-based solutions
Remote or on-site support available
11. Can you customize pipes?
Yes, customization available:
Diameter / SDR / pressure rating
Color (outer layer)
Marking / branding
Packaging
12. How do you ensure product quality?
We use:
Online laser measurement systems
Strict raw material control
Full production traceability
Consistent quality in large-volume production
13. What certifications do you have?
✔ ISO Certification
✔ SGS Testing
✔ CE Certification
Meets international project requirements
14. What industries use your pipes?
Our HDPE pipes are widely used in:
Municipal water supply
Irrigation systems
Industrial pipelines
Mining and dredging
15. Why choose SIFFO as your supplier?
✔ Large-scale manufacturing capacity
✔ Stable quality for bulk supply
✔ Competitive factory pricing
✔ Global project experience
Reliable partner for long-term projects
▎Start Your Project with SIFFO Today
✔ Get a fast quotation within 24 hours
✔ Receive technical recommendations for your project
✔ Access factory-direct pricing
Contact us now to secure your supply capacity
▎International Customer Visits & Factory Audits
SIFFO welcomes international purchasing teams, quality inspectors and project engineers to inspect our White Co-Extruded HDPE Pipe manufacturing. Factory visits provide direct access to production lines, raw materials, co-extrusion processes, wall-thickness measurements and finished-pipe inspections.
Through transparent technical discussions with our production and quality-control teams, customers can evaluate manufacturing capabilities and clarify project requirements before placing an order.
Customer Visit Highlights
German Customer Visit: Raw Materials & Pipe Quality Inspection
Planning a supplier assessment? Contact SIFFO to arrange a factory visit.
Nominal Pressure | PN 6 | PN 8 | PN 10 | PN 12.5 | PN16 | PN 20 | PN 25 |
SDR | SDR26 | SDR21 | SDR17 | SDR13.6 | SDR11 | SDR9 | SDR7.4 |
OD | Min Wall Thickness | ||||||
(mm) | (mm) | (mm) | (mm) | (mm) | (mm) | (mm) | (mm) |
Φ20 | 2.30 | 2.30 | 3.00 | ||||
Φ25 | 2.30 | 2.30 | 3.00 | 3.50 | |||
Φ32 | 2.30 | 2.40 | 3.00 | 3.60 | 4.40 | ||
Φ40 | 2.30 | 2.40 | 3.00 | 3.70 | 4.50 | 5.50 | |
Φ50 | 2.30 | 2.40 | 3.00 | 3.70 | 4.60 | 5.60 | 6.90 |
Φ63 | 2.50 | 3.00 | 3.80 | 4.70 | 5.80 | 7.10 | 8.60 |
Φ75 | 2.90 | 3.60 | 4.50 | 5.60 | 6.80 | 8.40 | 10.30 |
Φ90 | 3.50 | 4.30 | 5.40 | 6.70 | 8.20 | 10.40 | 12.30 |
Φ110 | 4.20 | 5.30 | 6.60 | 8.10 | 10.00 | 12.30 | 15.10 |
Φ125 | 4.80 | 6.00 | 7.40 | 9.20 | 11.40 | 14.00 | 17.10 |
Φ140 | 5.40 | 6.70 | 8.30 | 10.30 | 12.70 | 15.70 | 19.20 |
Φ160 | 6.20 | 7.70 | 9.50 | 11.80 | 14.60 | 17.90 | 21.90 |
Φ180 | 6.90 | 8.60 | 10.70 | 13.30 | 16.40 | 20.10 | 24.60 |
Φ200 | 7.70 | 9.60 | 11.90 | 14.70 | 18.20 | 22.40 | 27.40 |
Φ225 | 8.60 | 10.80 | 13.40 | 16.60 | 20.50 | 25.20 | 30.80 |
Φ250 | 9.60 | 11.90 | 14.80 | 18.40 | 22.70 | 27.90 | 34.20 |
Φ280 | 10.70 | 13.40 | 16.60 | 20.60 | 25.40 | 31.30 | 38.30 |
Φ315 | 12.10 | 15.00 | 18.70 | 23.20 | 28.60 | 35.20 | 43.10 |
Φ355 | 13.60 | 16.90 | 21.10 | 26.10 | 32.20 | 39.70 | 48.50 |
Φ400 | 15.30 | 19.10 | 23.70 | 29.40 | 36.30 | 44.70 | 54.70 |
Φ450 | 17.20 | 21.50 | 26.70 | 33.10 | 40.90 | 50.30 | 61.50 |
Φ500 | 19.10 | 23.90 | 29.70 | 36.80 | 45.40 | 55.80 | |
Φ560 | 21.40 | 26.70 | 33.20 | 41.20 | 50.80 | 62.50 | |
Φ630 | 24.10 | 30.00 | 37.40 | 46.30 | 57.20 | 70.30 | |
Φ710 | 27.20 | 33.90 | 42.10 | 52.20 | 64.50 | 79.30 | |
Φ800 | 30.60 | 38.10 | 47.40 | 58.80 | 72.60 | 89.30 | |
Φ900 | 34.40 | 42.90 | 53.30 | 66.20 | 81.70 | ||
Φ1000 | 38.20 | 47.70 | 59.30 | 72.50 | 90.20 | ||
Φ1200 | 45.90 | 57.20 | 67.90 | 88.20 | |||
Φ1400 | 53.50 | 66.70 | 82.40 | 102.90 | |||
Φ1600 | 61.20 | 76.20 | 94.10 | 117.60 | |||
Top-notch quality! This SIFFO co-extruded HDPE pipe performs incredibly well in Australia's harsh, sun-drenched environment. Its UV protection is absolutely superb—I've been using it for years, and it hasn't shown the slightest sign of becoming brittle or discolored. It is absolutely trustworthy.
I chose this HDPE pipe with a white co-extruded layer mainly because it reflects sunlight and reduces heat absorption. The project involves outdoor installation, so I don't need to worry about the water temperature inside the pipe getting too high in the summer. Most importantly, after comparing prices, I found that the pipes made with this new SIFFO process aren't much more expensive than regular black pipes, offering excellent value for money. I highly recommend it for outdoor projects.
